Comment 4 for bug 965811

The other coordinate package I am writing unit tests for is the HESS ( http://www.mpi-hd.mpg.de/hfm/HESS/ ) data analysis software package, which is not available outside the HESS collaboration.

I have also started to look at pytmp ( http://phn.github.com/pytpm/ ), which might be a good choice to compare pyephem results against.
TPM / PyTPM is very powerful, has unit tests and good documentation, but it is not as easy to use as xephem / pyephem.

Another test for pyephem I have stumbled upon is https://gist.github.com/1672906, where the pyephem result is compared to GPL Horizon.

If you are interested in adding unit tests to pyephem, I could help with that in the next weeks as I debug / add tests to the HESS software.